Perpetual calendar



Nov. 19, 1946. BERNSTEIN PERPETUAL CALENDAR 3 Sheets-Sheet 1 Filed Feb.16, 1945 VINVENTOR. Louls BERNSTEIN Nov. 19, 1946. L. BERNSTEIN2,411,185

PERPETUAL CALENDAR Filed Feb. 16, 1945 3 Sheets-Sheet 2 INVENTOR. [oulsBERNSTEIN L. BERNSTEIN PERPETUAL CALENDAR Filed Feb. 16, 1945 3Sheets-Sheet 3 m .E R mw m :V

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Nov. 19, I946.

Patented Nov. 19, 1946 UNITED STATES PATENT OFFICE PERPETUAL CALENDARLouis Bernstein, Brooklyn, N. Y. Application February 16, 1945, SerialNo. 578,294

3 Claims.

This invention relates to new and useful improvements in calendars, andhas more particularly reference to perpetual calendars.

More particularly the invention proposes a perpetual calendar which ischaracterized by a support sheet having an opening for viewing a yearplate. It is proposed to movably mount the year behind said supportsheet so that each year it may be turned to a new position and displaythe number of the year through the opening in said support sheet.

The invention proposes to turnably mount a small day of the week disc,and a medium month disc, and a large numeral disc coaxially with eachother on the front tionary indicator is mounted on said support sheetand extends across said discs, and is provided with window openings fordisplaying one notation of eachof said discs. 7

The invention also proposes imprinting the support sheet at areas aroundthe large numeral disc with sections indicating the months, and sectionsindicating the holidays contained in each of the months.

The invention also proposes a modified form of perpetual calendar,embodying means for holding the discs from turning and adjustably tofree the discs individually, or as a unit so that the discs may beindividually turned or turned as a group. p Still further the inventionproposes the construction of a perpetual calendar as briefly described,which may be manufactured and sold at a reasonable cost.

For further comprehension of the invention, and of the objects andadvantages thereof, reference will be had to the following descriptionand accompanying drawings, and to the appended claims in which thevarious novel features of the invention are more particularly set forth.

In the accompanying'drawings forming a material part of this disclosure:

Fig. 1 is an elevational View of a perpetual calendar constructed inaccordance-with thisinvention. l

Fig. 2 is a perspective. View of the calendar shown in Fig. 1 but drawnon a reduced scale.

Fig. 3 is a vertical sectional view taken on the line 3-3 of Fig. 2.2 i

Fig. 4 is a front elevational view of a perpetual calendar constructedin accordance with a modified form of this invention.

Fig. 5 is a fragmentary enlarged detailed View of a portion of Fig. 4.

of said support sheet. A star months of the 7 support sheet Fig. 6 is afragmentary enlarged vertical sectional view taken on the line 6-6 ofFig. 5.

Fig. 7 is a fragmentary enlarged sectional view taken on the line 7'! ofFig. 6.

Fig. 8 is a fragmentary enlarged horizontal sectional view taken on theline 8-8 of Fig. 6.

The perpetual calendar, in accordance with that form of the inventiondisclosed in Figs. 1 to 3 inclusive, includes a support sheet In havinganopening II for viewing a year plate I12 which is rotatively mountedupon a pintle pin 4 3 supported on the support sheet Iii. The year plate82 is imprinted with numbers, representing the years, which are viewablethrough the opening I2 when the year plate is turned to variouspositions.

As illustrated on the drawings it is in a position in which the year1945 is displayed. It may beturned to display subsequent years, asneeded. The support plate I ii is provided with alarge top area I5 whichmay be imprinted with a picture, or a puzzle, or other material to makethe calendar attractive, and decorative.

A small day of the week disc I 1 is superimposed upon a medium monthdisc I 8, which in turn is superimposed upon a large numeral disc I9.These discs are coaxial with respect to each other, and are coaxiallyturnably mounted on said pintle pin 13. These discs are'provided withserrations 2| upon their edges by which they may be conveniently turned.The discs I! and I 8 are separated from each other by afriction washer22. The discs lBand l9 are separated from each other by a frictionwasher 23, and the disc [9 is separated from the support sheet H] by afriction washer 24. These friction washers are mounted on the pintle pinI3. They serve to hold the said discs against free turning. However,each disc canbe manually turned.

The day of the week disc I! is divided into seven. peripheral areasimprinted with the days of the week; Monday, Tuesday, etc. The mediummonth disc I8 is divided into 12 areas which are imprinted withnotations representing. the year, namely, January, February, etc. Theseareasare also imprinted with notations to indicate the numbers of daysin each month, for example, January has 31 days, and February has 28days, and leap years 29 days, etc. The large numeral disc I?! isimprinted with 31 areas numbered from 1 to days of the month.

The stationary indicator-His supported on the I ii and extends acrosssaid discs I'l, l9, and is provided with window openl8 and 31 andrepresenting the the pintle pin. The support sheet l has a top opening32 by which it may be hung up on a nail, or other support on a wall, orother object.

The support sheet It is also imprinted with a circular area 34 about thelarge numeral disc 19 which is formed with sections imprinted with thenames of the months. Adjacent these sections 35 there are radiatingsections 36 which are imprinted with the holidays contained in each Imonth. For example, the month of March is imprinted as having St.Patricks day on March 17.

The calendar is used by rotating the small day of the week disc l1 andthe large numeral disc 19 each day so as to display the correct day. Themedium disc I8 is turned each month so as to display the proper month.Theyear plate i2 is turned each year.

In Figs. 4 to 8 inclusive, a modified form of the invention has beendisclosed which is very similar to the prior form distinguishing merelyin the fact that means havelbeen provided for holding the discs ll, l8and 19 from turning, and this means is adjustable to free the discs sothat they may be turned individually, or as a unit. This means includesa slide plate 4-9 engaged across the back of the indicator 21 and havingedge portions 4! engaged around the edges of the indicator 2?, andengaging cutouts 62 formed in the edge of the indicator 2'! by which theslide plate is limited to move a short distance upwards and downwards.

Leaf springs- 43 are mounted upon the bottom of the support block as andengage the top edge of the slide plate at normally urging it into itsbottom position. The slide plate 40 has window openings 44 which arealigned with the window openings 28 of the indicator 2'! so as not tointerfere with viewing the several discs through the window openings.

A plunger 46 is provided with each of the discs l1, l8 and I9 and eachis slidably' mounted through a tubular socket ll fixedly mounted on theback of the slide plate til. The stationary indicator 2'! is formed withsmall ventical slots 48 through which the plungers 46 pass. Theseplungers 46 are square, in transverse cross section, and the sockets 41are similarly shaped,

limiting the plungers to slide inwards and outwards, and restrainingthem from turning. Each plunger is provided with a knob t9 by which theplunger may be pressed inwards. Each plunger 4 has a small, spring 5!!located in back of the knob4-9 and acting against the front face of thestationar indicator 2] for normally urging the plunger 45 outwards Eachplunger 45 has a tooth-like projection 51 onits inner end which normallyengages the serrations 2! of said discs ll, l8 and 19. These tooth-likeprojections fixedly'hold the discsfrom bein turned.

The operation of this form of the invention is substantially identicalto the prior form, distinguishing merely in the fact that it isnecessary to free the discs ll, [8 and I9 before they may be turned.Each disc may be freed by pressing inwards the plunger d6 associatedwith the disc. When the knob 49 of a plungerilfi is pressed inwards, thetooth-like projection 5| will be ially turnably mounted astationaryindicator supported on said support 4 moved back and out fromthe serrations 2! in the disc, and it may be turned.

If it is desired to free the discs l1, l8 and I9 simultaneously so thatthey may be turned, as desired, without interference, the flanges 4| ofa slide plate 40 are manually gripped and moved upwards. Thus the slideplate 40 is raised, lifting all of the tooth-like projections 51 outfrom the serrations 2!. This is of particular advantage when thecalendar was not used for some time and all of the discs are in wrongpositions, and must be reset.

It is to be understood that this device may be used not only inconnection with calendars but any other data may be inscribed on thevarious discs such as" information about geographical locations,mathematical calculations, etc.

While I have illustrated and described the preferred embodiments of myinvention, it is to be understood that I do not limit myself to theprecise constructions herein disclosed and the right is reserved to allchanges and modifications coming within the scope of the invention asdefined in the appended claims.

Having thus describedmy invention, what I claim as new, and desire tosecure by United States Letters Patent is: l

1::A perpetual calendar, comprising a'support sheet having an openingfor viewing a yearjplate, a serrated small day of the week discsuperimposed on a serrated medium month disc superimposedon a serratedlarge numeral disc coaxially turnably mounted on said support sheet,afstationary indicator supported on 'said upport sheet and extendingacross'said discs and havingwindow openings for displaying one notationof each of said discs, a year plate turnably mounted in back of saidsupport sheet, and means for holding said discs from turning andadjustably to free the discs individually, or as a unit, including aslide plate slidably mountedon said indicator and having window openingsalignedwith the window openings of said indicator, resilient means forurging said slide plate downwards, a plunger for each of said discsmounted on said/slide plate through non-circular sockets, saidplungersbeing non-circular and complementary to said sockets, and tooth-likeprojections on the ends of" said plungers engaging theserrations on thediscs. 7

2. A perpetual calendar, comprising a support sheet having anopening forviewing a year plate,

aserrated small day of the week disc superim-f posed on a serratedmedium month disc super;

imposed on a serrated large numeraldisccoam, on said support sheet,

sheet'and extending across said discs and having window openings fordisplaying one notation of each of said discs, a year plate turnablymounted in back of said support sheet, and means for holding saiddiscsfrom turning and adlustably to' free the discs individually, or as aunit, including a slide plate slidably mounted on said indicator andhaving window opening-s aligned with the window openings of saidindicator, resilient means for urging said slide plate downwards, aplunger for each of. 'saiddiscsmounted on said slide plate throughnon-circular sockets, said plungers being non-circular and complementaryto said sockets, and tooth-like projections on the ends of said plungersengaging the serrationsv on the discs, and resilient means urgingsaidplungers outwards.

3. A perpetual calendar, comprising a support sheet having an openingfor viewin a yearnplate',

a serrated small day of the week disc superimposed on a serrated mediummonth disc superimposed on a serrated large numeral disc coaxiallyturnably mounted on said support sheet, a stationary indicator supportedon said support sheet and extending across said discs and having windowopenings for displaying one notation of each of said discs, a year plateturnably mounted in back of said support sheet, and means for holdingsaid discs from turning and adjustably to free the discs individually,or as a unit, including a slide plate slidably mounted on said indicatorand having window openings aligned with the window openings of saidindicator, resilient means for urging said Slide plate downwards, aplunger for each of said discs mounted on said slide plate throughnon-circular sockets, said plungers being non-circular and complementaryto said sockets, and tooth-like projections on the ends of said plungersengaging the serrations on the discs, edge portions of said slide platebeing engaged around the edge portions of said stationary indicator.

LOUIS BERNSTEIN.

